12100403 has 6 divisors (see below), whose sum is σ = 14076036. Its totient is φ = 10371732.

The previous prime is 12100391. The next prime is 12100411. The reversal of 12100403 is 30400121.

It is a happy number.

12100403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12100403 - 2¹⁰ = 12099379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123425 + ... + 123522.

It is an arithmetic number, because the mean of its divisors is an integer number (2346006).

Almost surely, 2^12100403 is an apocalyptic number.

12100403 is a deficient number, since it is larger than the sum of its proper divisors (1975633).

12100403 is an equidigital number, since it uses as much as digits as its factorization.

12100403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246961 (or 246954 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12100403 is about 3478.5633528800. The cubic root of 12100403 is about 229.5795911861.

Adding to 12100403 its reverse (30400121), we get a palindrome (42500524).

The spelling of 12100403 in words is "twelve million, one hundred thousand, four hundred three".